ItsMattsFault
Member
- Location
- Iowa
- Occupation
- Electrician
Hey all,
A recent install was done where we were not given correct information on a classified area. Turns out it is not Class II Div II, but actually Class II Div I. I now have to change a raceway to intrinsically safe (not difficult in itself). The problem arises with a solenoid installed in the same conduit. It is 24VDC and rated for the area, but we do not have a barrier that can work with an output, just inputs.
In the code book, 504.30 Exception 3 says they can be mixed assuming it follows 504.30(B), but 504.30(B) specifically talks about mixing different intrinsically safe circuits. Am I to assume that because the exception specifically calls out mixing intrinsically safe with nonincendive wiring, that 504.30(B) applies to it? We installed 14awg XHHW wiring which meets 504.30(B)(2) insulation thickness.
A recent install was done where we were not given correct information on a classified area. Turns out it is not Class II Div II, but actually Class II Div I. I now have to change a raceway to intrinsically safe (not difficult in itself). The problem arises with a solenoid installed in the same conduit. It is 24VDC and rated for the area, but we do not have a barrier that can work with an output, just inputs.
In the code book, 504.30 Exception 3 says they can be mixed assuming it follows 504.30(B), but 504.30(B) specifically talks about mixing different intrinsically safe circuits. Am I to assume that because the exception specifically calls out mixing intrinsically safe with nonincendive wiring, that 504.30(B) applies to it? We installed 14awg XHHW wiring which meets 504.30(B)(2) insulation thickness.
